# Computer Graphics NPTEL Assignment 3 Answers

Course Name: Computer Graphics NPTEL

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**These are the solution of Computer Graphics NPTEL Assignment 3 Answers**

**Q1) At the time of defining the objects, its shape, size, and position is not important. **

a. True

b. False

**Answer: a. True**

**Q2) In order to obtain composite matrix we multiply basic matrix in sequence. In this case**

a. we follow right-to-left rule in forming the sequence

b. we follow left-to-right rule in forming the sequence

c. we can follow either right-to-left or left-to-right rule in forming the sequence

d. any order can be considered in forming the sequence, as we are multiplying the matrices

**Answer: a. we follow right-to-left rule in forming the sequence **

**Q3) We can create a _______ grid to represent a 3D space.**

a. Pixel

b. Voxel

c. Frequency

d. Time

**Answer: b. Voxel **

**These are the solution of Computer Graphics NPTEL Assignment 3 Answers**

**Q4) With shearing transformation, we cannot change shape of an object. **

a. True

b. False

**Answer: b. False**

**Q5) When same scaling factor is used along both X and Y direction it is called **

a. Uniform scaling

b. Differential scaling

c. Equilateral scaling

d. Perpendicular scaling

**Answer: a. Uniform scaling **

**Q6) In 3D shearing there are _________ shearing factors.**

a. 3

b. 6

c. 9

d. 12

**Answer: b. 6 **

**These are the solution of Computer Graphics NPTEL Assignment 3 Answers**

**Q7) Matrix multiplication is commutative. So any sequence of the multiple geometric transformation will lead to same result. **

a. True

b. False

**Answer: b. False**

**Q8) In homogeneous coordinate system, any point of the form Ph(xh,yh,0) is considered to be at** _____.

a. Origin

b. Infinity

**Answer: b. Infinity**

**Q9) BSP stands for ________.**

a. Binary Sweep Partitioning

b. Best Space Partitioning

c. Binary Space Partitioning

d. Best Sweep Partitioning

**Answer: c. Binary Space Partitioning **

**These are the solution of Computer Graphics NPTEL Assignment 3 Answers**

**Q10) In scaling we multiply the object coordinates by some scalers, called ___________.**

a. Scaling index

b. Scaling factor

**Answer: b. Scaling factor**

**These are the solution of Computer Graphics NPTEL Assignment 3 Answers**

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